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Contact Angle Measurements
Static contact angle measurement involves the placement of microliter sized droplets on a sample surface. The angle formed at the boundary of the droplet is the contact angle, which characterizes a surface’s wettability. Dynamic contact angle measurements quantify contact angle hysteresis (the difference between advancing and receding contact angles), roll-off angle and absorption which can be useful for both non-absorbing and sponge-like materials.. The single atomic layer sensitivity makes contact angle measurement ideal for surface cleanliness and contamination detection for medical devices, fabrics, thin films and wafers.
Typical Experimental Results:
Various contact angle measurements on different surfaces and zoom levels.
3 state contact angle measurement of air in saline solution.
Extension and contraction method for determining the advancing (left) and receding (right)
angles.
Contact angle as a function of time for advancing angle (left) and receding angle (right) determination.
Water droplet undergoing transition during sliding angle test.
Applications:
| 60 Frame per Second Capture Speed | 90° Instrument Rotation | Adhesive Energy |
| Advancing and Receding Angle | Automatic Deposition | Automatic Stage Movement |
| Captive Bubble Contact Angle | Coating Uniformity | Contact Angle Hysteresis |
| Controlled Light Source | Correction of Curvature | Dynamic Contact Angle |
| Fluid Absorption | Hydrophobicity/Hydrophilicity | Liquid Permeability |
| Lotus Effect | Motor Driven Dispenser | Oleophobicity/Oleophilicity |
| Sliding Angle | Static Contact Angle | Surface Chemistry |
| Surface Contamination | Surface Roughness Influence | Surfactant Performance |
| Thin Film Coatings | Water Repellant Fabrics | Wettability |
For more information please read our application notes.
Instruments: Kyowa DM 701 Contact Angle Meter Key Specs
Key Specifications:
| Resolution | 0.1° |
| Measure Range | 0-180° |
| Drop Size | µL |
| Image Capture Device | CCD Camera at 60 FPS |
| Analysis Method | Half angle, circle, ellipse, tangent |
| Maximum Sample Size | 150x150x35mm |
| Maximum Sample Weight | 400g |
| Instrument Rotation | 90° |
| Stage Rotation | 360° |
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